CN103649628A - Member for controlling luminous flux, light-emitting device, and illumination device - Google Patents
Member for controlling luminous flux, light-emitting device, and illumination device Download PDFInfo
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- CN103649628A CN103649628A CN201280030747.0A CN201280030747A CN103649628A CN 103649628 A CN103649628 A CN 103649628A CN 201280030747 A CN201280030747 A CN 201280030747A CN 103649628 A CN103649628 A CN 103649628A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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Abstract
A member for controlling luminous flux (100) has an incidence surface (110) and an emitting surface (120). The incidence surface (110) is a pyramidal surface having a recessed shape relative to the bottom of the member for controlling luminous flux (100), and having rounded borders between the individual facets. The horizontal cross-section of the incidence surface (110) is substantially similar in shape to that of an n-hedral irradiated surface (410). In the horizontal cross-section of the emitting surface (120), each of the straight lines connecting together adjacent angles of the n angles that correspond to the n angles of the irradiated surface (410) is substantially parallel to the side that corresponds to the horizontal cross-section of the incidence surface (110). The horizontal cross-section of the emitting surface (120) is the same as the n-hedron formed by the straight lines in the cross section, or fits inside the n-hedron.
Description
Technical field
The present invention relates to the flux control member that the luminous intensity distribution of the light from light-emitting component ejaculation is controlled.In addition, the present invention relates to the lighting device that there is the light-emitting device of described flux control member and there is described light-emitting device.
Background technology
In recent years, from saving the viewpoint of the energy, as illuminating light source, use gradually light emitting diode (LED) to replace fluorescent lamp or Halogen lamp LED etc.
In the situation that using light emitting diode to irradiate plane of illumination, under light source (light emitting diode) and between away from the position of light source, illumination differs widely.Therefore,, in the situation that use a light emitting diode to irradiate wide plane of illumination, under light source and between the circumference of plane of illumination, illumination differs widely.As the method for using light emitting diode to irradiate equably wide plane of illumination, can consider closely to configure a plurality of light emitting diodes.But this method is seen not preferred from saving the viewpoint of the energy.
In addition, as using light emitting diode to irradiate equably the additive method of wide plane of illumination, can consider to expand from the luminous intensity distribution (for example,, with reference to patent documentation 1) of the light of light emitting diode ejaculation with lens.In patent documentation 1, recorded and comprised that light-emitting component and expansion carry out the light-emitting device unit of lens section of luminous intensity distribution of the light of self-emission device.Lens section has incident and comes the plane of incidence of light of self-emission device and expansion from the outgoing plane of the light of plane of incidence incident.The shape of lens section is the Rotational Symmetry (circle is symmetrical) of axle centered by the optical axis of light-emitting component.The shape of the lens section while therefore, overlooking is circular.By using the light-emitting device unit of recording in patent documentation 1, the light of self-emission device is to be irradiated to equably to a certain degree wide plane of illumination in the future.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2009-152142 communique
Summary of the invention
The problem that invention will solve
In the situation that the light-emitting device unit of recording in using patent documentation 1 is irradiated light to plane plane of illumination, the range of exposures of light is circular shape.Therefore, in the situation that the light-emitting device unit of recording in using patent documentation 1 is irradiated light to rectangular-shaped plane of illumination, likely four of plane of illumination jiaos dim.And, if be set to, to four jiaos of plane of illumination, irradiate sufficient light, surpass and need ground to expand light and produced useless light.
Like this, in the situation that use flux control member (lens) in the past, the light penetrating can not be irradiated to polygon-shaped plane of illumination expeditiously from light-emitting component.
The flux control member that the object of this invention is to provide the plane of illumination that the light penetrating from light-emitting component evenly and expeditiously can be irradiated to polygon (n limit shape: n is more than 3 integer) shape.In addition, another object of the present invention is to provide the light-emitting device with this flux control member and the lighting device with this light-emitting device.
The scheme of dealing with problems
Flux control member of the present invention is controlled the luminous intensity distribution of the light penetrating from light-emitting component, and the structure that this flux control member adopts comprises: the plane of incidence, the light that incident is penetrated from described light-emitting component, and outgoing plane, plane of illumination from from the light of described plane of incidence incident to n limit shape is penetrated, the described plane of incidence is in the position corresponding with described light-emitting component of bottom that is positioned at the opposition side of described outgoing plane, the pyramidal plane that is concave shape and forms with respect to described bottom, and the border that is each face of described pyramidal plane is the pyramidal plane of R face, the shape of the section of the described plane of incidence and light shaft positive cross described light-emitting component is and the shape of described plane of illumination similar shape roughly, in the section of described outgoing plane and light shaft positive cross described light-emitting component, each straight line that angle adjacent one another are in n angle is linked, corresponding limit almost parallel with the section of the described plane of incidence and light shaft positive cross described light-emitting component, wherein, a described n angle is corresponding with n angle of described plane of illumination, the section of described outgoing plane and light shaft positive cross described light-emitting component is identical with the n limit shape being formed by each straight line in the section of this outgoing plane, or be contained in its inside, described each straight line links the angle adjacent one another are in n angle corresponding to the angle of the n with described plane of illumination.
The structure that light-emitting device of the present invention adopts comprises above-mentioned flux control member and light-emitting component, and described flux control member is configured to, and makes the optical axis of described light-emitting component by the summit of described pyramidal plane.
The formation that lighting device of the present invention adopts comprises: above-mentioned light-emitting device; And by the light-struck polygon-shaped plane of illumination from described light-emitting device, described light-emitting device is configured to, make optical axis and the described plane of illumination quadrature of described light-emitting component.
Invention effect
The light-emitting device with flux control member of the present invention can evenly and expeditiously be irradiated to polygon-shaped plane of illumination by the light penetrating from light-emitting component.In addition, lighting device of the present invention can evenly and expeditiously be irradiated to polygon-shaped plane of illumination by light.
Accompanying drawing explanation
Figure 1A is the top perspective view of the lighting lens of embodiment 1, and Figure 1B is the face upwarding stereogram of the lighting lens of embodiment 1.
Fig. 2 A is the top view of the lighting lens of embodiment 1, and Fig. 2 B is the upward view of the lighting lens of embodiment 1.
Fig. 3 A is the profile of the A-A line shown in Fig. 2 A, and Fig. 3 B is the profile of the B-B line shown in Fig. 2 A, and Fig. 3 C is the profile of the C-C line shown in Fig. 2 A.
Fig. 4 is for the upward view of lighting lens of the embodiment 1 in matsurface region is described.
Fig. 5 is the profile of the D-D line shown in Fig. 3 B.
Fig. 6 is the profile with the lighting lens of the plane of incidence that does not comprise R face.
The figure of Illumination Distribution when Fig. 7 A means the lighting lens that uses embodiment 1.The figure of Illumination Distribution when Fig. 7 B means lighting lens in the past of use.
Fig. 8 A is the top view of lighting lens in the past, and Fig. 8 B is the upward view of lighting lens in the past, and Fig. 8 C is the profile of the F-F line shown in Fig. 8 A.
Fig. 9 A is the top perspective view of the lighting lens of use relatively, and Fig. 9 B is the face upwarding stereogram of the lighting lens of use relatively.
Figure 10 A is the top perspective view of the lighting lens of use relatively, and Figure 10 B is the face upwarding stereogram of the lighting lens of use relatively.
Figure 11 A is the top perspective view of the lighting lens of use relatively, and Figure 11 B is the face upwarding stereogram of the lighting lens of use relatively.
Figure 12 A is the top perspective view of the lighting lens of use relatively, and Figure 12 B is the face upwarding stereogram of the lighting lens of use relatively.
Figure 13 A is the top perspective view of the lighting lens of use relatively, and Figure 13 B is the face upwarding stereogram of the lighting lens of use relatively.
Figure 14 is the stereogram of the lighting device of embodiment 1.
Figure 15 A mean embodiment 1 light-emitting device join photodistributed curve map, Figure 15 B is the side view of the lighting device of embodiment 1.
Figure 16 A is the top view of the lighting lens of embodiment 2, and Figure 16 B is the upward view of the lighting lens of embodiment 2.
Figure 17 is the side view of the lighting lens of embodiment 2.
Figure 18 A is the profile of the A-A line shown in Figure 16 A, and Figure 18 B is the profile of the B-B line shown in Figure 16 A, and Figure 18 C is the profile of the C-C line shown in Figure 16 A.
Figure 19 A is the profile of the D-D line shown in Figure 18 B, and Figure 19 B is the profile of the E-E line shown in Figure 18 B.
The figure of Illumination Distribution when Figure 20 A means the lighting lens that uses embodiment 2.The figure of Illumination Distribution when Figure 20 B means the lighting lens that uses embodiment 1.
Label declaration
10,100,500 lighting lens
11,110 planes of incidence
111 recesses
112 planes
113 R faces
12,120,510 (510a, 510b) outgoing plane
130 flanges
140 legs
200 light-emitting components
300,600 light-emitting devices
400 lighting devices
410 plane of illuminations
CA central shaft
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are at length described.In the following description, as the typical example of flux control member of the present invention, to the light penetrating from light-emitting component being irradiated to expeditiously to square (n limit shape: n=4) lighting lens of the plane of illumination of shape describes.
In addition, " plane of illumination of square shape " in this description refers to the face being irradiated by light and is that the range of exposures of light is the face of square shape.Therefore, " plane of illumination of square shape " is not limited to the flat board of square shape.For example, in the situation that irradiate light to circular flat board with square shape, the face being irradiated by light belongs to " plane of illumination of square shape ".
(embodiment 1)
[structure of lighting lens and light-emitting device]
Fig. 1～5 mean the figure of structure of the lighting lens 100 of embodiment 1.Figure 1A is the top perspective view of lighting lens 100, and Figure 1B is the face upwarding stereogram of lighting lens 100.Fig. 2 A is the top view of lighting lens 100, and Fig. 2 B and Fig. 4 are the upward views of lighting lens 100.Fig. 3 A is the profile of the A-A line shown in Fig. 2 A, and Fig. 3 B is the profile of the B-B line shown in Fig. 2 A, and Fig. 3 C is the profile of the C-C line shown in Fig. 2 A.Fig. 5 is the profile of the D-D line shown in Fig. 3 B.
In addition,, in Fig. 3 A, together with lighting lens 100, also illustrate light-emitting component 200.That is, Fig. 3 A is also the profile of the light-emitting device 300 of embodiment 1.
As shown in Figures 1 to 3, lighting lens 100 has: the plane of incidence 110 of the light that incident is penetrated from light-emitting component 200; Make from the light of the plane of incidence 110 incidents to square (n limit shape: the outgoing plane 120 that n=4) plane of illumination of shape penetrates; Be arranged at the flange 130 of peripheral part; And the columned leg 140 that is arranged at the bottom surface side of flange 130.
The plane of incidence 110 of lighting lens 100 is inner surfaces of the recess 111 of bottom (being positioned at the opposition side of the outgoing plane 120) formation at lighting lens 100.The shape of recess 111 is roughly quadrangle cone shape.That is, the plane of incidence 110 is the positions corresponding with light-emitting component 200 that are formed at the bottom of lighting lens 100, and is with respect to the bottom of lighting lens 100, to be the quadrangular pyramid face (side of quadrangular pyramid) of concave shape.The shape of the peristome of recess 111 (shape of the bottom surface of quadrangular pyramid) is and the shape (square) of plane of illumination similar shape roughly.In addition, at the section shape of the plane of incidence 110 of any position of lighting lens 100 and direction central shaft CA (optical axis of light-emitting component) quadrature (below also referred to as " horizontal direction "), be also and the shape (square) of plane of illumination similar shape roughly.The position of each plane 112 that here, above-mentioned " optional position " is crosscut recess 111 (not being the face of R face described later (arc surface) 113).In addition, as described later, quadrangular pyramid is carried out circular arc chamfering, and forms R part (circular arc portion) in the bight of the section of the horizontal direction of the plane of incidence 110.Therefore, the shape of the section of the horizontal direction of the plane of incidence 110 is shapes similar to the shape (square) " roughly " of plane of illumination.
The border of each plane 112 of recess 111 (crest line and summit) forms R face 113 (with reference to Fig. 2 B).Thereby near the shape of the section of the horizontal direction top of recess 111 is that straight line portion is few and almost circular.In the situation that the border of each plane 112 of the plane of incidence 110 is not R face 113, can not make light towards central portion and the diagonal of plane of illumination, can produce uneven illumination.For the radius of R face 113, as long as can prevent the uneven illumination of plane of illumination, have no particular limits.For example, set as described below the radius of R face 113.
As shown in Figure 6, suppose that light incides the plane of incidence that does not comprise R face.In the situation that the light (solid line) penetrating from the luminous point O (point optical axis) of light-emitting component to optical axis direction incide Fig. 6 in the plane of incidence S1 shown in left side, light arrives the some A1 on plane of illumination via the some B1 on outgoing plane.On the other hand, in the situation that the light (solid line) penetrating from the luminous point O of light-emitting component to optical axis direction incide Fig. 6 the plane of incidence S2 shown in right side, light arrives the some A2 on plane of illumination via the some B2 on outgoing plane.Now, because the region between the some A1 of deficiency in light quantity on plane of illumination and some A2 becomes dark portion.In order not make this region become dark portion, and form R face face.
The intersection point of line segment OB1 and plane of incidence S1 is being made as to b1, and when the intersection point of line segment OB2 and plane of incidence S2 is made as to b2, a b1 and the some b2 inscribe radius of a circle that is point of contact of take becomes the least radius of R face.By such formation R face, light also can arrive between the some B1 and some B2 of outgoing plane, thereby also can light shine between the some A1 and some A2 of plane of illumination.
More than the radius of R face is made as to above-mentioned least radius, can suppress the generation of the dark portion of plane of illumination.In order to suppress more reliably the generation of dark portion, preferably by take the some a1 shown in Fig. 6 and the some a2 inscribe radius of a circle that is point of contact, be made as the radius of R face.Here, some a1 is the intersection point of line segment OA1 and plane of incidence S1, and some a2 is the intersection point of line segment OA2 and plane of incidence S2.In addition, if exceedingly expand the region of R face, and make the shape of the plane of incidence 110 approach sphere, near ejaculation light optical axis can not be distributed to the periphery direction of plane of illumination, and produce bright portion at the central part of plane of illumination.
Here, the radius of the R face of the apex portion of the diagonal angle conical surface is illustrated, and still, the radius of the R face of the crest line of pyramidal plane part is also identical.
Return to the explanation to the plane of incidence 110.Near region in the R face 113 of the crest line part of pyramidal plane, that summit is (region representing with " E " in Fig. 4) forms matsurface.By forming like this matsurface, can be suppressed at the uneven illumination that plane of illumination produces cross (X font).In addition, if make whole of R face 113 coarse, the illumination of four of plane of illumination jiaos likely reduces.
As mentioned above, in the central shaft CA mode consistent with the optical axis of light-emitting component 200, configure lighting lens 100.Now, the optical axis of light-emitting component 200 is by the summit (with reference to Fig. 3 A) of pyramidal plane (plane of incidence 110).
The section shape of the section shape of the horizontal direction of the plane of incidence 110 and the horizontal direction of outgoing plane 120 is all and the shape (square) of plane of illumination similar shape roughly.Now, 2 roughly foursquare towards unanimously.; in the section of the horizontal direction of the outgoing plane 120 shown in Fig. 5; each straight line (C1-C2 that angle adjacent one another are in 4 (n=4) angle C1～C4 corresponding with 4 (n=4) angles difference of plane of illumination is linked; C2-C3; C3-C4, C4-C1) with the corresponding limit almost parallel of the horizontal direction section (square) of the plane of incidence 110.In addition, position relationship between lighting lens 100 and plane of illumination is configured to, each straight line (C1-C2 in each limit in the horizontal direction section of the plane of incidence 110 and the horizontal direction section of outgoing plane 120, C2-C3, C3-C4, C4-C1), with each limit almost parallel of plane of illumination corresponding to these limits.
In addition, in the horizontal direction section of the outgoing plane 120 shown in Fig. 5, the section of outgoing plane 120 identical with following quadrangle (repetition), this quadrangle is by each straight line (C1-C2 that the angle adjacent one another are in 4 (n=4) angle C1～C4 corresponding to 4 (n=4) angles with plane of illumination is linked, C2-C3, C3-C4, C4-C1) institute form.
As shown in Fig. 3 A and Fig. 3 B, 4 (n=4) curved surfaces that form outgoing plane 120 are to be the curved surface of convex form with respect to the immediate plane 112 in 4 (n=4) planes 112 of the formation plane of incidence 110 (corresponding plane 112).In addition, 4 (n=4) curved surfaces of formation outgoing plane 120 do not have curvature (with reference to Fig. 5) in the horizontal direction.That is,, in the horizontal direction section of outgoing plane 120,4 curved surfaces that form outgoing plane 120 form respectively straight line.In this case, become at light-emitting component 200 and configure 4 structures that cylindrical lens is such around.By such formation, can make light to the circumference optically focused of plane of illumination.In addition, different from the plane of incidence 110, the border that forms 4 (n=4) curved surfaces of outgoing plane 120 does not have R face (with reference to Figure 1A).But, also can be formed with minimum R face required when processing mold.
By using the lighting lens 100 of embodiment 1, can reduce the light towards the optical axis direction of light-emitting component 200, and increase the light of four jiaos towards plane of illumination.Its result, by using the lighting lens 100 of embodiment 1, can be evenly and the illumination of self-emission device is in the future mapped to square shape expeditiously plane of illumination.
Fig. 7 A means the figure of the Illumination Distribution when light-emitting device 300 with the lighting lens 100 that comprises embodiment 1 and light-emitting component 200 irradiates the plane of illumination of square shape.In this experiment, the interval between light-emitting component 200 and plane of illumination is made as to 250mm.In addition, the size of plane of illumination is made as to 500mm * 500mm.
The size of each portion of the lighting lens 100 (PMMA system) using in this experiment is as follows.
The length on 1 limit of the plane of incidence 110 while overlooking (roughly square): 8.2mm.
The length on 1 limit of the outgoing plane 120 (square) while overlooking: 7.67mm.
Height from the peristome of recess 111 to the summit of outgoing plane 120: 4mm.
The radius of R face 113: 2mm.
In Fig. 7 A, the plane of illumination of square shape (500mm * 500mm) is marked with to color.Each numerical value is the illumination (unit: lx) at this position.As shown in Figure 7 A, in the situation that use the lighting lens 100 of embodiment 1, can cause (192～266lx) in the plane of illumination that is radiated at equably square shape by wide.On the other hand, light is not almost irradiated to plane of illumination outer (12～35lx).Know thus, the plane of illumination of square shape evenly and is expeditiously irradiated.
Fig. 7 B means the figure of the Illumination Distribution while irradiating the plane of illumination of square shape with the light-emitting device that comprises lighting lens in the past and light-emitting component.In this experiment, as lighting lens in the past, used the lighting lens 10 shown in Fig. 8 (PMMA system).
Fig. 8 A is the top view of lighting lens in the past, and Fig. 8 B is the upward view of lighting lens in the past, and Fig. 8 C is the profile of the F-F line shown in Fig. 8 A.The inscribe diameter of a circle of the plane of incidence 110 during the overlooking of the diameter of the plane of incidence 11 (circle) while overlooking and the lighting lens 100 of embodiment (roughly square) is roughly the same.The circumscribed diameter of the outgoing plane 120 (square) during the overlooking of the diameter of outgoing plane 12 (circle) while overlooking in addition, and the lighting lens 100 of embodiment is roughly the same.
As shown in Figure 7 B, in the situation that use lighting lens 10 in the past, compare with the central part of the plane of illumination of square shape, the illumination of four jiaos is low, has produced uneven illumination.In addition, owing to also having irradiated light (35～73lx) outward at plane of illumination, so compare the illumination low (66～136lx) in plane of illumination with the lighting lens 100 of embodiment 1.
Like this, by using the lighting lens 100 of embodiment 1, compare with lighting lens 10 in the past, the light of self-emission device 200 evenly and is expeditiously irradiated to the plane of illumination of square shape in the future.
In addition, the inventor has also carried out same experiment to the lighting lens of the shape shown in Fig. 9～13.
Lighting lens shown in Fig. 9 is circular this point in the shape of the horizontal profile of outgoing plane 120, different from the lighting lens 100 of embodiment 1.Fig. 9 A is top perspective view, and Fig. 9 B is face upwarding stereogram.In the situation that use the lighting lens shown in Fig. 9, four jiaos of the plane of illumination of square shape are dimmed.
Lighting lens shown in Figure 10 is near taper seat (being R face summit) this point at the plane of incidence 110, different from the lighting lens 100 of embodiment 1.Figure 10 A is top perspective view, and Figure 10 B is face upwarding stereogram.In the situation that use the lighting lens shown in Figure 10, the central area of the plane of illumination of square shape is dimmed.
Lighting lens shown in Figure 11 does not have R face (having crest line) this point at the boundary of each face of the plane of incidence 110, different from the lighting lens 100 of embodiment 1.Figure 11 A is top perspective view, and Figure 11 B is face upwarding stereogram.In the situation that use the lighting lens shown in Figure 11, the central area of the plane of illumination of square shape and cornerwise near zone are dimmed.
Lighting lens shown in Figure 12 has the boundary of each face of R face (there is no crest line) and the plane of incidence 110 there is no R face (having crest line) this point at the boundary of each face of outgoing plane 120, different from the lighting lens 100 of embodiment 1.Figure 12 A is top perspective view, and Figure 12 B is face upwarding stereogram.In the situation that use the lighting lens shown in Figure 12, the central area of the plane of illumination of square shape and cornerwise near zone are dimmed.
Lighting lens shown in Figure 13 is when overlooking lighting lens 100, the square forming at the outward flange by the plane of incidence 110 staggers 45 ° with the square being formed by the outward flange of outgoing plane, and the boundary of each face of the plane of incidence 110 does not have R face (having crest line) this point, different from the lighting lens 100 of embodiment 1.Figure 13 A is top perspective view, and Figure 13 B is face upwarding stereogram.In the situation that use the lighting lens shown in Figure 13, light concentrates on central area and the diagonal near zone of the plane of illumination of square shape.
Known according to above experimental result, in order evenly and expeditiously to irradiate the plane of illumination of square shape, meet following 1)～3) condition be important.
1) plane of incidence 110 is that the border of each face is the pyramidal plane of R face.
2) shape of the horizontal profile of the plane of incidence 110 is and the shape of plane of illumination similar shape roughly.
3) 4 of the horizontal profile of outgoing plane 120 angles are corresponding with 4 angles of the horizontal profile of the plane of incidence 110.That is,, in the horizontal profile of outgoing plane 120, each straight line that the angle adjacent one another are in 4 angles corresponding to 4 angles with plane of illumination is linked, with the corresponding limit almost parallel of the horizontal profile of the plane of incidence 110.
[structure of lighting device]
Next, to thering is the lighting device of the light-emitting device 300 of embodiment 1, describe.
Figure 14 is the stereogram of the lighting device 400 of embodiment 1.As shown in figure 14, lighting device 400 comprises the plane of illumination 410 of light-emitting device 300 and square shape.As mentioned above, light-emitting device 300 comprises lighting lens 100 and light-emitting component 200.
Plane of illumination 410 is square (n limit shapes: the n=4) plane of shape.With plane of illumination 410 and the mode of the central shaft CA of lighting lens 100 and the optical axis of light-emitting component 200 (with reference to Fig. 3 A) quadrature, configure light-emitting device 300.Now, the central shaft CA of lighting lens 100 and the optical axis of light-emitting component 200 are by the central part of plane of illumination 410.
As mentioned above, the horizontal profile of the plane of incidence 110 of lighting lens 100 and the horizontal profile of outgoing plane 120 are roughly all square shapes.Here, so that these 2 roughly each limit of square shape and each limit mode parallel to each other of plane of illumination 410 configure light-emitting device 300.
By utilizing the irradiation plane of illumination 410 penetrating from light-emitting device 300 to use lighting device 400.The light-emitting device 300 of embodiment 1 irradiates the plane of illumination 410 of square shape equably, and does not substantially irradiate outside plane of illumination 410.Thereby lighting device 400 can be evenly and is irradiated expeditiously the plane of illumination 410 of square shape.
Figure 15 A mean embodiment 1 light-emitting device 300 join photodistributed curve map (measure angle 0 °).In addition, Figure 15 B is the side view of the lighting device 400 of embodiment 1.
As shown in Figure 15 A, the light-emitting device 300 of embodiment 1 is at the angle ± θ of regulation
aillumination under (in the curve map of Figure 15 A approximately ± 50 °) is for the highest.This θ
avalue according to the plane of incidence 110, the curvature with respect to the angle of the real estate of light-emitting component 200 and each face of outgoing plane 120 changes.As shown in Figure 15 B, the line that links light-emitting device 300 and the end of plane of illumination 410 is being made as to θ for the angle of the central shaft (consistent with the central shaft CA of lighting lens 100) of light-emitting device 300
lsituation under, in order to irradiate expeditiously plane of illumination 410, preferably with θ
l> θ
amode configure light-emitting device 300.
[effect]
The lighting lens 100 of embodiment 1, light-emitting device 300 and lighting device 400 can evenly and expeditiously be irradiated to the light penetrating from light-emitting component 200 plane of illumination 410 of square shape.
(embodiment 2)
[structure of lighting lens and light-emitting device]
Figure 16～19 mean the figure of structure of the lighting lens 500 of embodiment 2.Figure 16 A is the top view of lighting lens 500, and Figure 16 B is the upward view of lighting lens 500.Figure 17 is the side view of lighting lens 500.Figure 18 A is the profile of the A-A line shown in Figure 16 A, and Figure 18 B is the profile of the B-B line shown in Figure 16 A, and Figure 18 C is the profile of the C-C line shown in Figure 16 A.Figure 19 A is the profile of the D-D line shown in Figure 18 B, and Figure 19 B is the profile of the E-E line shown in Figure 18 B.
In addition,, in Figure 18 A, together with lighting lens 500, also illustrate light-emitting component 200.That is, Figure 18 A is also the profile of the light-emitting device 600 of embodiment 2.
As shown in Figure 16～19, the lighting lens 500 of embodiment 2, same with the lighting lens 100 of embodiment 1, comprise the plane of incidence 110, outgoing plane 510, flange 130 and leg 140.Inscape in the lighting lens 500 of embodiment 2 and light-emitting device 600 except the outgoing plane of lighting lens almost identical from the lighting lens 100 of embodiment 1 and light-emitting device 300 (radius of the R face of the plane of incidence etc. are slightly different).Therefore,, for the lighting lens 100 with embodiment 1 and the identical inscape of light-emitting device 300, also the description thereof will be omitted to give identical label.
Outgoing plane 510 is positioned at the opposition side of the plane of incidence 110 in lighting lens 500.As shown in figure 17, outgoing plane 510 consists of 4 face 510b that are positioned at 4 face 510a of top (direct of travel of the light on optical axis) and are positioned at side (flange 130 sides).4 face 510a that are positioned at top are shapes (relatively with reference to Fig. 3 A and Figure 18 A) identical with a part for the outgoing plane 120 of the lighting lens 100 of embodiment 1.On the other hand, 4 face 510b that are positioned at side are respectively the face (face substantially vertical with flange 130) with optical axis almost parallel.The section shape of the horizontal direction of the upper section of outgoing plane 510 is and the shape (square) of plane of illumination similar shape (with reference to Figure 19 B) roughly.On the other hand, the section shape of the horizontal direction of the below part of outgoing plane 510 is not and the shape (square) of plane of illumination similar shape (with reference to Figure 19 A) roughly.
The position of 4 (n=4) angle C1～C4 at 4 (n=4) angles corresponding to plane of illumination in the section of the horizontal direction of outgoing plane 510, corresponding with 4 (n=4) angles in the section of the horizontal direction of the plane of incidence 110.; at the outgoing plane 510 (510a shown in Figure 19 A and Figure 19 B; in the section of horizontal direction 510b); each straight line (C1-C2 that angle adjacent one another are in 4 (n=4) angle C1～C4 corresponding to 4 (n=4) angles with plane of illumination is linked; C2-C3; C3-C4, C4-C1) with the corresponding limit almost parallel of the section (square) of the horizontal direction of the plane of incidence 110.Position relationship between lighting lens 500 and plane of illumination is configured to, each straight line (C1-C2 in the section of each limit in the section of the horizontal direction of the plane of incidence 110 and the horizontal direction of outgoing plane 510, C2-C3, C3-C4, C4-C1) each limit almost parallel of the plane of illumination corresponding with these limits.
Below the outgoing plane 510 shown in Figure 19 A in the section of horizontal direction of part, the section of outgoing plane 510 (510b) is contained in by each straight line (C1-C2 that the angle adjacent one another are in 4 (n=4) angle C1～C4 corresponding to 4 (n=4) angles with plane of illumination is linked, C2-C3, C3-C4, C4-C1) the tetragonal inside that forms.On the other hand, the section identical with following quadrangle (repetition) of outgoing plane 510 (510a) in the section of the horizontal direction of the upper section of the outgoing plane 510 shown in Figure 19 B, this quadrangle is by each straight line (C1-C2 that the angle adjacent one another are in 4 (n=4) angle C1～C4 corresponding to 4 (n=4) angles with plane of illumination is linked, C2-C3, C3-C4, C4-C1) institute form.
As shown in Figure 18 A and Figure 18 B, form in 8 faces of outgoing plane 510, with optical axis (the central shaft CA of the lighting lens 500) contact of light-emitting component and with 4 (n=4) planes 112 of the formation plane of incidence 110 respectively corresponding 4 curved surface 510a with respect to immediate plane 112 (corresponding plane 112), be the curved surface of convex form.In addition, these 4 (n=4) curved surface 510a do not have curvature (with reference to Figure 19 B) in the horizontal direction.That is,, in the section (section of horizontal direction) of the central shaft CA quadrature with lighting lens 500,4 (n=4) curved surface 510a form respectively straight line.In this case, become at light-emitting component 200 and configure 4 structures that cylindrical lens is such around.By such formation, can make light to the circumference optically focused of plane of illumination.In addition, the border of these 4 (n=4) curved surface 510a does not have R face (with reference to Figure 16 A).
By using the lighting lens 500 of embodiment 2, same with the lighting lens 100 of embodiment 1, the light of self-emission device evenly and is expeditiously irradiated to the plane of illumination of square shape in the future.
Figure 20 A means the figure of the Illumination Distribution when light-emitting device 600 with the lighting lens 500 that comprises embodiment 2 and light-emitting component 200 irradiates the plane of illumination of square shape.In addition, Figure 20 B means the figure of Illumination Distribution when light-emitting device 300 with the lighting lens 100 that comprises embodiment 1 and light-emitting component 200 irradiates the plane of illumination of square shape.
As shown in Figure 20 A and Figure 20 B, in the situation that use the lighting lens 100 of embodiment 1 and the lighting lens 500 of use embodiment 2, light can both be radiated in the plane of illumination of square shape almost evenly.On the other hand, light is irradiated to outside plane of illumination hardly.In addition,
Figure 20 A and Figure 20 B are compared known, with use the situation of the lighting lens 100 of embodiment 1 and compare, in the situation of the lighting lens 500 of use embodiment 2, further suppressed, to the light of plane of illumination external exposure, to have irradiated more expeditiously the plane of illumination of square shape.In the measurement result shown in Figure 20 A and Figure 20 B, to the brightness value of the measuring point between the outermost edge of measurement range and colored plane of illumination (measured value fencing up with double line in figure), compare known, compare (151～204) with using the situation of the lighting lens 100 of embodiment 1, brightness value low (59～131) in the situation of the lighting lens 500 of use embodiment 2.As can be seen here, compare with the lighting lens 100 of embodiment 1, the effect that is square shape by irradiation area control of the lighting lens 500 of embodiment 2 is high.
[effect]
The lighting lens 500 of embodiment 2 and light-emitting device 600 and to have the lighting device of light-emitting device 600 of embodiment 2 (not shown; With reference to Figure 14) same with lighting lens 100, light-emitting device 300 and the lighting device 400 of embodiment 1, the light penetrating from light-emitting component 200 evenly and expeditiously can be irradiated to the plane of illumination of square shape.
In addition, in the respective embodiments described above, although to for irradiating square (n limit shape: the n=4) lighting lens 100,500 of the plane of illumination of shape, light-emitting device 300,600 and lighting device 400 are illustrated, but lighting lens of the present invention, light-emitting device and lighting device are not limited to this.For the shape of plane of illumination, so long as polygon (n limit shape: n is more than 3 integer) just has no particular limits, can be also triangle (n=3) or pentagon (n=5), hexagon (n=6) etc.In this case, the horizontal profile of the plane of incidence is shaped as and the shape (polygon) of plane of illumination similar shape roughly.
The application advocates that the Japanese patent application laid based on submitting on June 22nd, 2011 is willing to No. 2011-138370 and the Japanese patent application laid of submission on September 27th, 2011 is willing to the priority of No. 2011-210277.The content of recording in its application specification and accompanying drawing is fully incorporated in present specification.
Industrial applicibility
Flux control member of the present invention, light-emitting device and lighting device can make the light penetrating from light-emitting component evenly and efficiently irradiate polygon-shaped plane of illumination.Light-emitting device of the present invention and lighting device for example, are useful as plant culture with illumination or portable lamp (illumination on table), reading lamp etc.
Claims (6)
1. a flux control member, controls the luminous intensity distribution of the light penetrating from light-emitting component, comprising:
The plane of incidence, the light that incident is penetrated from described light-emitting component; And
Outgoing plane, penetrates the plane of illumination from the light of described plane of incidence incident to n limit shape,
The described plane of incidence is in the position corresponding with described light-emitting component of bottom that is positioned at the opposition side of described outgoing plane, the pyramidal plane that is concave shape and forms with respect to described bottom, and be that the border of each face of described pyramidal plane is the pyramidal plane of R face,
The shape of the section of the described plane of incidence and light shaft positive cross described light-emitting component is and the shape of described plane of illumination similar shape roughly,
In the section of described outgoing plane and light shaft positive cross described light-emitting component, each straight line that angle adjacent one another are in n angle is linked, corresponding limit almost parallel with the section of the described plane of incidence and light shaft positive cross described light-emitting component, wherein, a described n angle is corresponding with n angle of described plane of illumination
The section of described outgoing plane and light shaft positive cross described light-emitting component is identical with the n limit shape being formed by each straight line in the section of this outgoing plane, or being contained in its inside, described each straight line links the angle adjacent one another are in n angle corresponding to the angle of the n with described plane of illumination.
2. flux control member as claimed in claim 1, wherein,
Form in a plurality of of described outgoing plane, with the optical axis contact of described light-emitting component and with n the plane that forms the described plane of incidence respectively corresponding n curved surface be respectively the curved surface that is convex form with respect to this plane.
3. flux control member as claimed in claim 2, wherein,
Be contained in described n the curved surface forming in a plurality of of described outgoing plane and form respectively, in the section of described outgoing plane and light shaft positive cross described light-emitting component linearly.
4. flux control member as claimed in claim 1, wherein,
Be contained in the border that forms described n curved surface in a plurality of of described outgoing plane and do not there is R face.
5. a light-emitting device, comprising:
Flux control member claimed in claim 1 and light-emitting component,
Described flux control member is configured to, and makes the optical axis of described light-emitting component by the summit of described pyramidal plane.
6. a lighting device, comprising:
Light-emitting device claimed in claim 5; And
By the light-struck polygon-shaped plane of illumination from described light-emitting device,
Described light-emitting device is configured to, and makes optical axis and the described plane of illumination quadrature of described light-emitting component.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011138370 | 2011-06-22 | ||
| JP2011-138370 | 2011-06-22 | ||
| JP2011-210277 | 2011-09-27 | ||
| JP2011210277A JP5756722B2 (en) | 2011-06-22 | 2011-09-27 | Luminous flux control member, light emitting device, and illumination device |
| PCT/JP2012/003758 WO2012176393A1 (en) | 2011-06-22 | 2012-06-08 | Member for controlling luminous flux, light-emitting device, and illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103649628A true CN103649628A (en) | 2014-03-19 |
| CN103649628B CN103649628B (en) | 2016-12-21 |
Family
ID=47422256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280030747.0A Expired - Fee Related CN103649628B (en) | 2011-06-22 | 2012-06-08 | Flux control member, light-emitting device and illuminator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9297511B2 (en) |
| JP (1) | JP5756722B2 (en) |
| CN (1) | CN103649628B (en) |
| TW (1) | TWI568971B (en) |
| WO (1) | WO2012176393A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108506757A (en) * | 2018-02-05 | 2018-09-07 | 惠州市华星光电技术有限公司 | A kind of LED light emission device and its secondary lens structure |
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| JP6028966B2 (en) * | 2012-07-25 | 2016-11-24 | パナソニックＩｐマネジメント株式会社 | Light source body and lighting device using the same |
| JP6111154B2 (en) * | 2013-05-02 | 2017-04-05 | 株式会社エンプラス | Luminous flux control member, light emitting device, lighting device, and mold |
| JP2015187671A (en) * | 2014-03-27 | 2015-10-29 | 一詮精密工業股▲ふん▼有限公司 | optical element |
| JP6172042B2 (en) * | 2014-05-16 | 2017-08-02 | 伸和エクセル株式会社 | LED lens |
| CN105240805B (en) * | 2015-10-12 | 2018-05-22 | 深圳磊迈照明科技有限公司 | A kind of LED light-distribution lens and LED light emission device |
| CN110383803A (en) * | 2016-12-23 | 2019-10-25 | 亮锐有限责任公司 | Compensate vignetting |
| KR101966615B1 (en) * | 2017-09-27 | 2019-04-08 | 현대모비스 주식회사 | Ramp apparatus |
| JP2019067571A (en) * | 2017-09-29 | 2019-04-25 | 山田照明株式会社 | LED lighting unit and line type base lighting fixture |
| US11125414B2 (en) * | 2017-11-15 | 2021-09-21 | Lite-On Electronics (Guangzhou) Limited | Light distribution module |
| JP6729627B2 (en) | 2018-04-20 | 2020-07-22 | 日亜化学工業株式会社 | Light source module |
| JP6828715B2 (en) | 2018-05-31 | 2021-02-10 | 日亜化学工業株式会社 | Light source module |
| JP7187857B2 (en) * | 2018-07-19 | 2022-12-13 | 三菱電機株式会社 | lighting fixtures and lenses |
| WO2021019771A1 (en) * | 2019-08-01 | 2021-02-04 | 株式会社トヨテック | Light projection lens and light projection device |
| CN115135927A (en) * | 2020-02-24 | 2022-09-30 | 昕诺飞控股有限公司 | Light emitting device for light emitting panel |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201303217A (en) | 2013-01-16 |
| TWI568971B (en) | 2017-02-01 |
| CN103649628B (en) | 2016-12-21 |
| US20140146546A1 (en) | 2014-05-29 |
| WO2012176393A1 (en) | 2012-12-27 |
| US9297511B2 (en) | 2016-03-29 |
| JP5756722B2 (en) | 2015-07-29 |
| JP2013030446A (en) | 2013-02-07 |
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